[1] Med Univ Vienna, Gen Hosp, Dept Paediat & Adolescent Med, Wahringer Gurtel 18-20, A-1090 Vienna, Austria
[2] Univ Vienna, Fac Psychol, Dept Dev & Educ Psychol, Vienna, Austria
[3] Childhood Canc Int Europe CCI E, Vienna, Austria
[4] Elternhilfe Krebskranke Kinder eV Leipzig, Leipzig, Germany
[5] Charite Univ Med Berlin, Dept Paediat Oncol Haematol, Berlin, Germany
[6] Cent Hosp Bolzano, Bolzano, Bolzano, Italy
[7] West German Proton Therapy Ctr Essen WPE, Essen, Germany
[8] Saarland Univ, Med Ctr, Dept Paediat Oncol & Haematol, Homburg, Germany
[9] Univ Leipzig, Med Fac, Dept Psychosomat Med & Psychotherapy, Leipzig, Germany
[10] Kepler Univ Klinikum Linz Med Campus IV, Linz, Austria
[11] Univ Childrens Hosp Munster, Paediat Haematol & Oncol, Munster, Germany
[12] Univ Clin Salzburg, Dept Childhood & Adolescent Med, Salzburg, Austria
[13] Univ Hosp Vienna, Dept Childhood & Adolescent Med, Vienna, Austria
[14] St Anna Childrens Hosp, Vienna, Austria
[15] Univ Wurzburg, Childrens Hosp, Wurzburg, Germany
[16] Univ Hosp Frankfurt, Dept Pediat Hematol & Oncol, Frankfurt, Germany
[17] Tech Univ Dresden, Fac Psychol, Clin Psychol & Behav Neurosci, Dresden, Germany
[18] KOKON Psychosocial & Mental Hlth Pediat Lab, Rohrbach Berg, Austria